This was one of Oscar's second spirit ring abilities, a passive skill—Mental Sharing. As long as someone ate Oscar's sausage, Oscar could gain their senses for up to twenty-four hours.
Oscar did not sell sausages solely because of Tang San and Xiao Wu. In fact, he sold sausages every year around this time.
He intended to use the combined abilities of Mental Sharing and Mirror Flower Water Moon to identify any possible spies among these people, as well as students connected to Evil Soul Masters.
By normal reasoning, no one would believe that any force would send one of their own prodigies—someone under twelve with Soul Power at level twenty, already considered a minor genius—to Shrek Academy to probe them.
But as it happened, Oscar had truly caught two spies a few years ago.
Though the two spies had only been eleven or twelve, and their strength had not even met Shrek's admission standards, meaning they had learned virtually nothing, there was no denying that they were spies.
Only through Oscar's subsequent investigation did he learn that the two had been young-generation soul masters fostered by a Spirit Hall branch.
They had sent the two children to investigate Shrek because the chaos in Suotuo City last year had drawn Spirit Hall's attention.
Moreover, the main target of their investigation had not been Shrek at all, but the power behind the Soto Grand Spirit Fighting Arena. They had even wanted to discreetly see whether the Upper Three Sects were involved.
And while they were at it, they most wanted to try their luck and see whether they could find Sky Net, which had always remained shrouded in mystery.
In other words, investigating Shrek had merely been like buying a lottery ticket, to see whether they might stumble upon any unexpected gains.